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A. G. SANDERS.

HOISTING APPARATUS.

No. 866,740. Patented July 19 R m" m A E a QHEHWIINH|I|IH Q a A I 1 \N i M k QR. km N N I 7W M R QR I; l cases ETERS, PlmoLmw n m. waeningmn, D. C.

UNITED STATES PATENT OFFICE.

ADDISON GHOST SANDERS, OF MARTINSVILLE, MISSOURI.

HOISTING APPARATUS.

SPECIFICATION forming part of Letters Patent No 366,740, dated July 19, 1887.

Application filed April 9:2, 188?. Serial No. 235,707. (No modc.)

To all whom it may concern:

Be it known that I, ADDISON GROST SAN- DERS, a citizen of the United States, residing at Martinsville, in the county of Harrison and State of Missouri, have invented a new and useful Improvement in Hoisting Apparatus, of which the following is a specification.

My invention relates to an improvement in apparatus for hoisting wellbuekets and similar objects; and it consists in the peculiar construetion and combination of devices, that will be more fully set forth hereinafter, and pointed out in the claims.

In the drawings, Figure 1 is a side elevation of a hoisting apparatus embodying my improvements. Fig. 2 is a top plan view of the same. Fig. 3 is a front elevation.

A represents a supporting base or platform, which is arranged near the mouth of the well, and B represents a pair of vertical standards, which rise from opposite sides of the base or platform at the center thereof.

0 represents a beam, which is pivoted near its center to a cross-bar, D, that connects the upper ends of the standards B. The longer end of the beam 0 extends over the mouth of the well, and is provided at its extremity on its under side with a curved metallic loop, E, the lower side of which forms a guide-track for the pulley F of a depending bloek,G. The short arm of the beam is provided with a longitudinal slot, H, and near the outer end of the said slot is journaled a pulley, I. The bolt K, on which the said pulley turns, is adapted to pass through either of the longitudinal series of openings L, with which the outer end of the beam 0 is provided. At a suitable distance from the outer end of the short arm of the beam 0 is fulcrumed a lever, M, on a bolt, m, and at a suitable distance from the outer end of the long arm of the said beam is fulcrumed a similar lever, N, on a bolt, n.

0 represents a Windlass, which isjournaled horizontally in bearing-blocks P, secured on the front sides of the standards B, near the lower ends thereof. The said Windlass is provided at the projecting end of its shaft or spindle with radial arms 1%, by means of which it may be turned.

S represents a rope, which connects the lower end of the lever N to the windlass,and is coiled thereon in one direction, and T represents a similar rope, which is coiled on the Windlass in the opposite direction and is connected to the lower end of the lever M.

U represents a counterbalance-bar, which is provided near its rear end on its upper side with a bail or loop,V, the upper side of which is horizontal and bears upon the pulley I, journaled in the short arm of the beam 0.

\V represents a link, which has its upper end pivoted to the upper end of the lever N, and its lower end connected to the counterbalanoebar, near the front end of the latter, by a pin or bolt, X, which works in the longitudinal slot V, made in thelink, and enters the counterbalance-bar.

Y represents a link, which is pivoted to the upper end of the lever M. The said link Y is made of two sections flexibly jointed together, and the lower section, Y, has a longitudinal slot, Y". Z represents a pivotal bolt or pin which extends through the said slot and enters the counterbalance-bar at a suitable distance in rear of the bolt or pin X. Veights A are suspended below the extremities of the counterbalance-bar by means of hooks or loops B, and the ends of the counterbalancebar are provided with longitudinal series of transverse openings, C,adapted to receive the suspending hooks or loops, and thereby permit the weights to be adjusted lon gitudinally on the ends of the counterbalancebar. The upper ends of the lovers M and N are connected together by a rod, D.

E represents a forwardly-projecting guidearm, which has its rear end pivoted between the lower ends of the standards B. The front end of the said guide-arm has a pulley, F, over which passes an elevatingrope, G. The upper end of this rope is attached to the block Gr, previously described, and the lower end of the rope is attached to a well-buoket or other weight, H.

I represents a cord of suitable length, which connects the block G to an eyebolt, K, on the front side of one of the standards B.

The operation of my invention is as follows: Vhen the Windlass is turned in the direction indicated by the arrow in Fig. 1, the rope T is coiled 011 the Windlass, thereby drawing forward the lower end of the lever M, and. the

' rope S is uncoiled on the Windlass; thereby permitting the front end of the lever N to move forward. As the upper ends of the levers M and N 'move rearward, the linkY draws rearwardly on the counterbalancebeam U, and the slot W in the link Wpermits the rearward motion of the said counterbalancebeam, and thereby thelatter is caused to move rearward beyond the short arm of the beam 0. This causes the weights attached to the said counterbalance-bar to overcome the gravity of the well-bucket or weight H and of the front end of the beam 0, and the latter is thus caused to rise to the position indicated in solid lines in Fig. 1, and thereby elevate the weight. As the front end of the beam 0 rises, the cord 1 becomes tightened and draws the block G from which the weight'or bucket is suspended rearward on the lower side of the ball or loop E, thus decreasing the leverage on the front end of the beam 0, and assisting the latter to raise the weight; Vhen the weight or bucket H comes in contact with the outer end of the guidearm E, the latter rises and thus prevents the well-bueket or weight from swinging rearward toward the Windlass.

Having thus described my invention, I claim- 1. In a'hoistingapparatus, the combination of the fulcrumed beam C, to which the weight is attached, and the counterbalaneebar U, suspended from the beam 0 and movable longitudinally thereon, and thereby adapted to overcome the gravity of the weight and of the front end of the beam and raise the latter, and the levers connected to the counterbalancebar and to the elevating-rope to operate the counterbalance-bar,substantial] y as described.

2. In a hoisting apparatus, the combination of the pivoted beam 0, the levers M and N, fulerumed thereto near opposite ends thereof,

the Windlass, the ropes coiled in -opposite directions thereonand connected to the lower ends of the levers M and N, therod connecting the upper ends of the said levers, and the longitudinally movable counterbalance --bar suspended from the rear end of the beam 0, and the links W and Y, connecting the said counterbalance-bar to the upper ends of the levers, substantially as described.

3. In ahoisting apparatus, the combination of the beam 0, the Windlass to raise the front end of the said beam, the loop or guide E at the front end of the beam, the block G, suspended from the said loop or guide, to which the weight to be hoisted is attached, and the cord I, connecting the block G to a fixed point near the fulcrum of the beam, whereby the weight will be drawn inward on the beam as the latter rises, substantially as described.

In testimony that I claim the foregoing as my own I have hereto afiixed my signature in presence of two witnesses.

ADDISON GROST SANDERS.

\Vitnesses:

J. L. ROUNDTREE, HEN Y MOTTINGER. 

